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Income Taxes (Tables)
12 Months Ended
Aug. 31, 2024
Income Tax Disclosure [Abstract]  
Schedule of Provision for Income Taxes
The provision for income taxes consists of the following components during the periods presented (in millions):
 Year Ended August 31,
 202420232022
Provision for current federal taxes$113.6 $105.8 $67.6 
Provision for current state taxes26.6 15.7 16.3 
Provision for current foreign taxes19.4 27.0 25.4 
(Benefit from) provision for deferred taxes(33.6)(47.8)0.6 
Total provision for income taxes$126.0 $100.7 $109.9 
Schedule of Income before Income Tax, Domestic and Foreign
The following table presents income before income taxes for our domestic and foreign operations for the periods presented: (in millions):
 Year Ended August 31,
 202420232022
Domestic$472.4 $367.5 $409.6 
International76.2 79.2 84.3 
Income before income taxes$548.6 $446.7 $493.9 
Schedule of Reconciliation of Federal Statutory Rate to Total Provision for Income Taxes
The following table reconciles the provision at the federal statutory rate to the total provision for income taxes during the periods presented (in millions):
 Year Ended August 31,
 202420232022
Federal income tax computed at statutory rate$115.2 $93.8 $103.7 
State income tax, net of federal income tax benefit19.7 11.4 13.5 
Federal permanent differences2.1 2.2 (4.3)
Foreign permanent differences and rate differential2.3 4.4 4.3 
Research and development tax credits(10.1)(8.3)(7.6)
Unrecognized tax benefits2.0 1.9 2.1 
Other, net(5.2)(4.7)(1.8)
Total provision for income taxes$126.0 $100.7 $109.9 
Schedule of Components of Net Deferred Income Taxes
Components of the net deferred income tax liabilities as of the dates presented include (in millions):
 August 31,
 20242023
Deferred income tax liabilities:  
Depreciation$(21.8)$(21.5)
Goodwill and intangibles(150.2)(151.2)
Operating lease right of use assets(15.8)(19.8)
Other liabilities(1.8)(3.4)
Total deferred income tax liabilities(189.6)(195.9)
Deferred income tax assets:  
Self-insurance2.1 1.7 
Pension6.7 5.9 
Deferred compensation24.5 23.1 
Net operating losses7.1 6.2 
Other accruals not yet deductible43.3 43.4 
Operating lease liabilities18.5 22.6 
Capitalized research and development70.1 41.5 
Other assets14.0 15.4 
Total deferred income tax assets186.3 159.8 
Valuation allowance(20.4)(19.9)
Net deferred income tax liabilities$(23.7)$(56.0)
Schedule of Unrecognized Tax Benefits Roll Forward
The following table reconciles the change in the unrecognized income tax benefit (reported in Other long-term liabilities on the Consolidated Balance Sheets) during the periods presented (in millions):
Year Ended August 31,
202420232022
Unrecognized tax benefits balance at beginning of year$20.1 $19.5 $17.7 
Additions based on tax positions related to the current year4.2 4.3 3.5 
Additions for tax positions of prior years— 1.4 0.1 
Reductions for tax positions of prior years(0.1)(1.7)(0.2)
Reductions due to settlements— (0.5)— 
Reductions due to lapse of statute of limitations(3.1)(2.9)(1.6)
Unrecognized tax benefits balance at end of year$21.1 $20.1 $19.5